Incandescent-lamp burner.



No. 653,253. Patented My ID, IQOD/ 0. LEHMAN.

INCANDESCENT LAMP BURNER.

(Application filed Feb. 11, 1899.) (No Model.)

2 SheetsSheei g,

Patented July I 0, I900. 0. LEHMAN.

INCANDESCENT LAMP BURNER.

. (Application filed Feb. 11, 1899.)

(No Model.) 2 Sheets-Sl1eef 2 (311 anion.-

" Grimm lTElD terns PATENT Free OTTO LEIIMAN, on NEW YORK, N. ASSIGNOR, BY MESNE ASSIGNMENTS, TO 'rnn STANDARD INCANDESOENT BURNER conrnur, or PORTLAND,

MAINE. a

lNCANDESCENT-hAM P BU RN ER.

SPECIFICATION forming part of Letters Patent No. 653,253, dated July 10, 1900.

pplication filed February 11,1899. Serial No. 7051354. (N model- To all whom, zit may concern: v screw-threaded portion (t' to receive athread- Be it known that I, OTTO LEHMAN, a citizen ed portion formed at the lower end of the outer of the United States, residing at New York, casing or chimney-gallery support 13, which borough of Manhattan, in the county of New latter may be of any approved or ornamental 5 York and State of New York, haveinventcd construction. The burner-baseAis provided 55 certain new and useful Improvements in in above the threaded portion a with an annucandeseent-Lamp Burners, of which ihe'follar upwardly-projecting fiangea and to the '1 lowing is a specification, reference being had said flange and base is attached a central air therein to the accompanying drawings. and wick tube C, within which is supported, This invention relates to that class of burnas by small webs c, a tube D, within the lower 60 ers adapted to produce a blue flame from a portion of which works a rack (Z, attached at liquidhydrocarbon for the purpose of heating its lower end to the wick-raiser d, the upper to ineandescence a filamentary or gauze manend of which latter surrounds the tube C-and tie for incandescent illumination; and the inis provided with projecting points for engage vention has for its object to produce a burner ment with the wick c. The rack d is engaged 65 of. this kind adapted to be applied to wellbya pinion carried by the wick-raiser shaft known forms of kerosene or other liquid-11y d journaled in the burner-base A, and prodrocarbon lamps now in use, the, improved vided in the usual manner with a fingerburner being of such a character that there wheel ri. p 9 will be no oifensive odor or smell resulting Into the upper end of the tube D is loosely 70 from imperfect combustion either when the inserted the stem c of a spreader or cap e, lamp is first lighted, when it is burning, or preferably made hollow or concave on its unf after it has been extinguished. Means are der side. This spread-er or cap e serves to also provided whereby any smoking or eardivert the ascending vapor from the flame on r bonizing of the filamentary mantle can be the wick outward,.and thus assists in the 75 absolutely avoided by reason of the fact that proper mingling of the vapor with the incomthe burning end of the wick can be kept per ing air. fectly smooth, and be so controlled that there "Within the casing B is inserted the lower 1. will be no projecting filaments which might cylindrical portion f of the chimney-gallery result in an uneven flame, and thereby oeca- F, the said portion f having in the construc- 8o sion smoking or earbonizing oft-the mantle. tion herein shown a 'free sliding iit within In the accompanying drawings, Figure l. is guides b, rigidly fixed to or formed as parts an elevation of the improved burner with the of the said support or casing ii, the said porouter casing, serving as a support for the tion f of said gallery being provided with i chimney-gallery,in section. Fig. 2 is a censuitable air-openings f, the lower series of, 85 tral vertical section of the burner; and Fig. which is surrounded by a collar forming a 3 is a horizontal section on line 3, Fig. 1. shutter f, suitably supported on the portion l ig. 4 is adetail perspective view of the outer f, so as to be adapted to be partially rotated wick-tube with its wiclueontrollcr and ilamefor the purpose of closing the lower series of 40 check. 'Fig. 5 is a detail plan view of the openings more or less to regulate the ingo cone or thimble. Fig. (i is a vertical section draft of air outside of the wick of the burner. of thcimproved burner, taken at right angles The guides I1 are slightly recessed on their to the sectional view Fig. 2. Fig. 7 is a secinner faces opposite the shutter f to make tional viewillustratinga form of thcimproved room for said shutter. The said portion f of burneradaptedfor usein connection with eenthe gallery-support is preferably provided 5 tral-draft lamps. with a lightiug-opening f, through which A denotes the base of the burner, prefer when the ehin'iney-gallery has been suitably ably provided with a screw-thread (L for atelevated by the lifting push-rod f, the up tachment toa threaded collar of alamp. The per end of which impinges against a flange base A is also preferably provided witha on said gallery, a lighted match may be insorted to light the wick. The chimney-gallery has a circular series of holes f adjacent to the flange f thereof.

G denotes a tube having a flanged base 9 loosely fitting over the upper end of the flange cf, the said tube encircling the upper portion of the wick c and being provided at its upper end with an inwardly-turned flange g, which preferably terminates over the middle of the wick.

II denotes a cone or thimble which is preferably inserted loosely within the chimneygallery F and rests upon the flange f near the base of said gallery, the upper in wardlyturned portion of said cone being some little distance above the spreader and mixer 0, thus forming what may be termed a mixingchamber between the inturned lip or flamecheck g of the tube G and the said inwardlyturned portion of said cone, and in which mixing-chamber the said spreader and' mixer c is located, said spreader and mixer having a diameter less than the central opening in said cone and said opening being the burneropening for the vapor generated by the flame on the wick. The cone II is preferably provided with a lug 71., to which, as by a setserew h, is secured a rod '5, which supports the filamentary mantle or hood I, the lower portion of which extends down around the upper portion of the said cone. It will thus be seen that the mantle may be inserted in place or removed from the lamp with the said cone II, and thus, as the mantle will be prr crly centered over the cone and fixed in place by means of the set-screw h before being placed in the lamp, it is certain to be adjusted to proper position centrally of the burner when inserled inplace. For the parpose of insuring the proper placingof the cone II in position the portion ol' lhcchimncy-gallery is preferably provided with a pin with which a suitable hole in the base of the cone it will be brought into register, and. the op posite side of the cone is also preferably provided with a hole through whichand through a hole in the flange the lower end of the mantlc-supporting red /I preferably extends. The cone II has a series of. holes h in its flanged base.

The tube G is preferably provided near its upper-end with an outwardly extending flange 1 which partly iills the space between the said tube and the inner wall of the cone ll, thereby contracting the air-passage between these parts, so that the ascending air drawn upward by the draft of the chimneywill be sucked through this con'LTacted passage with considerable force, so as to insure a proper combustion for the production of a blue llunsen llame necessary for heatiugthe iiwarulescing mantle.

The lube I is vertically movable and tightly surrounds the upper portion of the wick holding the latter against the points I of the \\'ick-raiscr1/., so that there is friction enough between the wick and the said tube wick is raised.

G to cause the latter to be lifted when the To limit the upward' movement of the said tube G when thus lifted by the wick, spring-catches attached to the flange (t of the burner-base,'are preferably provided. The inturned flange g at the upper end of the tube G, extending, as it does, partly over the upper end of the wick, serves as aflame-check, so that when the lamp is lighted the wick will burn only on the inner side of its upper edge and on the upper end of its inner side above the tube 0. The said int-urned flange g also serves as a wick con-l troller or evener by 'll-eventing filaments of the wick from projecting from the upper or outer side thereof, and thus insuring a perfectly-even flame, so that there will be no danger of smoking the mantle owing to uneven burning of the wick. v

lVhen the lamp is to be lighted, the wick will belifted by the wick-raiser, thereby lifting the tube G with the wick until the upward movement of said tube is checked by the spring-catches g". This movement 'will bring the upper end of the wick snug beneath the inturned flange g, which will hold the wick smooth and even. The wick may now be lighted, and when this has been done the wick is lowered, carrying with it the tube G until the shoulder g at the base of said tube rests on the top of the flange (6 which arrests the downward movement of the said tube, and a very slight farther downward movement of the wick will then bring the top of the said wick slightly below said inturned lip or flange g of the said tube. The wick will then be in proper burning position relative to the said inturned lip or flange of the-said tube; but as there is snllieient'frietional hold betwpen the wick and the said tube to cause the latter to be moved up and down with the wick when not positively restrained from such movement either by contact between the shoulder g and the top of the flange a or by contact between said shoulder and the shoulders of the spring-catches 9 it will be understood that a limited movement of said tube with the wick can be effected to bring the tube and/wick into any desired position of adjustment relative to the cap e or the top of the cone Ii, such simultaneous adjustment of the wick and tube being desirable to secure under different conditions perfect 00111 0118: tion and the bestpossible smokeless blue flame for heating the mantle. It will thus be seen that the tubeil will be adjusted with the wick unless positively restrained from movement in one direction or the other, and when the said tube has reached its limit of movement the wick may be adjusted up or down independcntlyof the said tube, exceptingas the upward movement of the wick is limited by the inturned lip or .llangcat the top of said tube.

'lhc wick c is a divided one and is spread on opposite sides of the side passage 0, form'- ing an air-entrain'zo to the central tll'ddlbl) of the tube G and between the latter and the cone H to the miXing-chamber-aiforded by the space above the cap or flange g at the upper end of the said tube G and beneath the upper inwardly-turned end of the cone II and in which mixing-chamber the spreader e is located. From this it results that when the lamp is lighted a narrow circle of lum'in ous vapor-producing flame will appear on the upper end and upper inner side of the wick and that the mixed vapor and air issuing from the said mixing-chamber through the opening in the cone II will burn above said cone with a blue flame of great heat, thereby ineandescing the mantle I and producing a strong white light. The air entering through the holes f in the chimney-gallery and passing upward through the series of holes h in the flanged base of the cone II into the chimney will afford a clearance'draft 'within the chimney J, which will keep the latter clean and prevent the products of combustion from settling on or dimming the glass. The vapor generated. by the flame at the upper end of the wick will be forced outward by the eireular spreader e beneath the inturned flange at the top of the cone II and will return to pass through the opening in said cone, this circuitous passage of the vapor in the mixingchamber insuring a thorough mingling oi. the

vapor with the air passing upward to said chamber both within and without the wick, so that the combustion of the said vapor and air will produce a strong smokeless blue [lame which is at all times entirely free from any disagreeable odor resulting from the combustion of thckcrosene, naphtha, or otherliquid hydrocarbon employed.

In the form of the invention heretofore described the improved burner is adapted to be applied to well-known forms of lamps already in use in substitution of the old forms of burners with which they may be provided simply by unscrewing an old burner from a lamp and replacing the same by the improved burner, which is to be screwed into the threaded collar with which the old lamp is provided.

in the form of the invention shown in Fig.-

7 the improved burner is illustrated as being adapted for use with wollknown forms of central-draft lamps heretofore constructed and in which the ventral-draft air tnbo (1 of the lamp andthe upward extension 3" thereof, take the place of the central-draftair-lubc (shown in Figs. 2, i and 3,) the chimneygallery support ll" of this form of theinwntion being adapted for attachment to the lamp by a bayonet-joint connection or otherwise, as may be desired. In this form of burner adapted for central-draft lamps the verticallymovable tube G, the cone H,tl1e flame spreader and mixer e, and the removable chimney-gallery support F are constructed and arranged to operate in the same manner as in the form of theinvention heretofore described.

Having thus described my invention, I claim and desire to secure by Letters Paten t- 1. In a lam p'burnor, the combination with a fixed central air-tube, of a wick-adjusting device a portion of which is exterior to said tube, a vertically-movable tube loosely surrounding said air-tube but adapted to tightly encircle a wick held between said air-tube and said vertically-movable tube so that the latter may be raised and lowered by frictional contact with the wick as the wick is moved by said wick-adj ustin g device, said verticallymovable tube having an inturned lip at its upper end, and stops for limiting the up and down movements of the said vertically-movable tube as the latter is moved by the wick, said stops permitting a vertical movement of the Wick independently of said verticallymovable tube after the latter has reached the limit of its movement in either direction.

2. In a lamp-burner, the combination with a fixed central air-tube, of a wick-adjusting device a portion of which is exterior to said tube, a vertically-movable tube loosely surrounding said air-tube but adapted to tightly encircle a wick held between said air-tube and said vertically-movable tube so that the latter may be raised and lowered by frictional contact with the wick as the wick is moved by said wick-adjustingdevice, said verticallymovable tube having an inturncd lip at its upperend, stops for limiting the up and down movements of the said vertically-movable tube as the latter is moved by the wick, said stops permitting a vertical movement of the wick independently of said vertically-movable tubc after the latter has reached the limit of its movement in either dircctioina spreader or cap above the said air-tube, and a cone encircling the said spreader or cap.

3. In a lamp-burner, the combination with a iixed central air-tube, of a wick-adjusting device a portion of which is exterior to said tube, a vcrtically-movable tube loosely surrounding said air-tube but adapted to tightly encircle a wick held between said air-tube and said vcri ically-inovablc tube 50 that the latter may he raised and lowered by frictional conta t with the wick as the wick is moved by said wiclcadjustingdevice, said verticallymovable tube having an intnrned lip at its uppcrcnd, stops [oi-limiting the up and down movements of the said vcrtically-movable tube as the lattc'r is moved by the wick, said stops pormittinga vertical movement olf the wick indepemlcntly of said vcrtically-moV- able-lube after the latter has reached the (SOHO.

i. In a lamp-burner, the combination with a fixed central air and wick tube, of a vertieally-movable tube loosely surrounding the upperportion of said fixed tube and provided at its upper end with an inturned lip 0r flange, means for positively limiting the vertical movements of said movable tube either up or down, and a \vicll'adjusting, device interpos d between said tubes, there being sullieient space between said wick-adjusting device and the said verti :.ll -n1ovable tube so that the wiek, which is to surround the said wiek-adjusting device, and which'is to be encircled by said vertically-movable tube, will be embraced by thelatter with sufficient friction to cause said vertically-movable tube to be moved up and down with the said wick when notpositively restrained from such movement, the wick being capable of a vertical movement independent of the said vertically-movable tube when the latter is posit vely held from movement.

In testimony whereof-I affix my signature in the presence of two witnesses.

' OTTO LEIIMAN.

\Vitnesses:

HENRY CALVER, (lee. W. REA. 

